New Hampshire Impairment Rating Guide
New Hampshire workers' compensation uses the 5th Edition of the AMA Guides to the Evaluation of Permanent Impairment under RSA 281-A:32(XIV); Lab 506.
Which Edition?
AMA Guides Edition 5th Edition
Statutory Authority
RSA 281-A:32(XIV); Lab 506(opens in a new tab)
PPD Calculation
Statutory Maximum Weeks 350 weeks
300 weeks (maximum scheduled member); 350-week whole-person base for multiple-member/spine scheduled impairment awards; weekly wage-loss PPD limited to 262 weeks. Weekly PPD = 60% of wage-loss differential for up to 262 weeks. Separate scheduled impairment awards use the statutory member schedule, with whole-person impairments converted using a 350-week base.
Notes
The implementing administrative rule (Lab 506) requires that permanent impairment evaluations be based on the AMA Guides Fifth Edition and include an affirmation from the physician that the Fifth Edition was used.
Frequently Asked Questions
Which edition of the AMA Guides does New Hampshire use?
New Hampshire uses the 5th Edition of the AMA Guides to the Evaluation of Permanent Impairment under RSA 281-A:32(XIV); Lab 506. The applicable edition is generally determined by the worker's date of injury; consult counsel for cases that straddle effective-date transitions.
How is permanent partial disability calculated in New Hampshire?
300 weeks (maximum scheduled member); 350-week whole-person base for multiple-member/spine scheduled impairment awards; weekly wage-loss PPD limited to 262 weeks. Weekly PPD = 60% of wage-loss differential for up to 262 weeks. Separate scheduled impairment awards use the statutory member schedule, with whole-person impairments converted using a 350-week base.
Where can I find a certified impairment rater in New Hampshire?
Browse our directory of certified impairment raters listed for New Hampshire. View the directory →
Does this information constitute legal or medical advice?
No. This page provides general statutory and methodological information for educational purposes only. Statutes change, case law shifts controlling interpretation, and individual cases turn on facts beyond what reference material can capture. Consult qualified legal counsel and a credentialed rating physician for any specific matter.
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